Formation of [RuIII(edta)(SNO)]2– in RuIII(edta)-Mediated S-Nitrosylation of Bisulfide Ion

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• 作者：Debabrata Chatterjee ; Papiya Sarkar ; Maria Oszajca ; Rudi van Eldik
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：May 16, 2016
• 年：2016
• 卷：55
• 期：10
• 页码：5037-5040
• 全文大小：301K
• 年卷期：0
• ISSN：1520-510X

文摘

The reaction of hydrogen sulfide (H₂S) and nitric oxide (NO) is of great physiological significance in human organisms. Our present studies show that Ru^III(edta) (edta^4– = ethylenediaminetetraacetate) mediates the S-nitrosylation of bisulfide ion (HS^–) using NO to form [Ru^III(edta)(SNO)]^2–, the first-ever example of a ruthenium complex containing thionitrite (SNO^–) in aqueous solution. The reaction product [Ru^III(edta)(SNO)]^2– was characterized by IR, electron paramagnetic resonance, and electrospray ionization mass spectroscopy. Our studies further show that formation of the putative thionitrous acid coordinated to Ru^III(edta) does not occur via the reaction of [Ru^III(edta)NO]⁻ with HS^–.